Locator assembly for mounting members for roadway gap bridging and sealing devices

ABSTRACT

A locator assembly for locating the longitudinal and transverse spaced positions for anchoring studs for roadway gap bridging and sealing devices in accordance with the temperature on the day of installation of the bridging and sealing devices. Where the slabs adjacent the gap are imperfect and will not support a locator assembly, outriggers are provided for suspending the locator assembly from remote sound portions of the slabs. By properly locating the anchoring studs, the gap bridging and sealing devices are protected, their operating characteristics are preserved, and the slabs adjacent the gap are not damaged due to improper installation of the bridging and sealing devices.

United States Patent Czernik et al.

LOCATOR ASSEMBLY FOR MOUNTING MEMBERS FOR ROADWAY GAP BRIDGING ANDSEALING DEVICES Inventors: Daniel E. Czernik, Hinsdale;

Clarence H. Neff, Skokie, both of 111.

US. Cl. 404/72, 408/115 Int. Cl. E0lc 11/04 Field of Search 404/48, 74,87,33/174 G;

7/1930 l-leltzel 404/48 Heltzel 404/74 Older 404/48 3/1942 Kovanda..404/87 8/1960 Berta 408/115 Primary Examiner-Nile C. Byers, Jr.Attorney, Agent, or Firm-Dressler, Goldsmith, Clement & Gordon, Ltd.

[ 5 7 ABSTRACT A locator assembly for locating the longitudinal andtransverse spaced positions for anchoring studs for roadway gap bridgingand sealing devices in accordance with the temperature on the day ofinstallation of the bridging and sealing devices. Where the slabsadjacent the gap are imperfect and will not support a locator assembly,outriggers are provided for suspending the locator assembly from remotesound portions of the slabs. By properly locating the anchoring studs,the gap bridging and sealing devices are protected, their operatingcharacteristics are preserved, and the slabs adjacent the gap are notdamaged due to improper installation of the bridging and sealingdevices.

10 Claims, 11 Drawing Figures PATENTEMN 22 19M fka' Fla, 4

LOCATOR ASSEMBLY FOR MOUNTING MEMBERS FOR ROADWAY GAP BRIDGING ANDSEALING DEVICES This invention relates to a locator assembly forlocating the longitudinal and transverse spaced positions for anchoringmembers which are used to secure roadway gap sealing and bridgingdevices, such as end dam assemblies, to roadway slabs adjacent a roadwaygap.

Gaps between adjacent roadway slabs are commonly bridged for the passageof traffic thereacross. They are also preferably sealed against thepassage of water and debris from the surface of the slabs downwardlyinto the gap. One of the types of bridging and sealing devices which iscurrently used is an end dam section which is anchored to horizontalslabs surfaces adjacent the gap. When the section is secured to theslabs, it must be located to take into consideration the effects oftemperature changes upon the roadway slabs and their responsivemovements at the gap.

Because roadway slabs expand and contract with increases and decreasesin the ambient temperature, the gap between adjacent roadway slabs isdesigned to take into consideration the temperature changes to beencountered during the year, and therefore gaps of 2, 3, 4 or moreinches are provided. For example, in areas such as the midwestern partof the United States, roadways may be designed to accommodatetemperature extremes of perhaps -'30F and 130F and movements, at thegap, of the slabs of several inches.

If the anticipated temperature extremes and the temperature on any givenday of installation of a sealing device are not taken intoconsideration, then the sealing device may be stretched so far on colddays that it may pull its anchors from the concrete or may so compresson hot days that it buckles and tends to push out the anchors, in eachcase tending to tear up the adjacent slab portions.

In accordance with this invention, an anchor locator assembly iscalibrated for the lateral adjustment of anchor locators for an ambienttemperature range for a particular gap bridging assembly so that theanchors for securing the gap bridging sealing device may be properlylocated with respect to the slabs adjacent the gap. The locator assemblytakes into consideration the design characteristics of the particulargap sealing device and the temperature on the day of installation. Thelocator assembly will be calibrated to identify the posi- I tions foranchors so that when secured, the gap bridging sealing device maycompress and expand within an anticipated temperature range withouttending to destroy the integrity of the slabs.

To that end, a preferred locator assembly includes an elongate railassembly provided with at least two longitudinally spaced first anchorlocators and a laterally adjustable assembly. The adjustable assemblyalso provides at least two longitudinally spaced second anchor locators.Temperature gauging means for identifying a plurality of differentambient temperature conditions are provided to identify a plurality ofdifferent positions of lateral adjustment of the laterally adjustableassembly relative to the elongate rail assembly. The laterallyadjustable assembly and the elongate rail assembly are securable againstlateral movement in each of the identifiable positions of lateraladjustment, thereby to position pairs of first and second anchorlocators in predetermined laterally spaced positions according to theambient temperature on the day of installation. The lateral spacing ofthe pairs of anchor locators corresponds to the positions in whichanchoring members such as anchoring studs are to be secured to the slabsadjacent the gap and also to the positions in which corresponding,laterally spaced pairs of mounting holes of a gap bridging device shouldbe positioned at the temperature on the date of installation to securethe gap bridging device to the roadway to obtain the designed range ofmovement from the gap bridging device. The locator assembly alsoproperly locates the positions for the anchoring members longitudinallyof the gap.

In another of its aspects, this invention provides an assembly forlocating the longitudinal and transverse spaced positions for anchoringmembers, such as anchoring studs, for roadway gap sealing and bridgingdevices where broken edges of the slabs adjacent the gap will notthemselves suitably support an anchor locator assembly. In that case alocator assembly of this invention contemplates the provision ofoutriggers. The outwardly extending outriggers serve to suspend alocator assembly from sound portions of the roadway slabs remote fromthe edges of the slabs which define the gap and indeed, in some cases,the suspended locator assembly may also serve to suspend anchoring studsat proper locations along the gap and as a form for the concrete used torefill and reshape the broken edges of the slabs.

Further objects, features and advantages of this invention will becomeapparent from the following description and drawings, of which:

FIG. 1 is a plan view of a locator assembly of this invention;

FIG. 2 illustrates a typical environment in which a roadway gap issealed by an end dam assembly, the an choring means for which areadapted to be located by a locator assembly of FIG. 1;

FIG. 3 is an enlarged perspective view of an end dam section of the enddam assembly of FIG. 2;

FIG. 4 is an enlarged fragmentary view of a portion of FIG. 1;

FIG. 5 is an enlarged fragmentary crosssectional view takensubstantially along the line 5-5 of FIG. 1;

FIG. 6 is an enlarged fragmentary cross-sectional view takensubstantially along the line 6-6 of FIG, 1;

FIG. 7 is an enlarged fragmentary cross-sectional view takensubstantially along the line 7-7 of FIG. 1;

FIG. 8 is a fragmentary view similar to FIG. 2 showing several end damsections installed and showing the locator assembly of FIG. 1 positionedto locate anchoring means;

FIG. 9 illustrates a further embodiment of a locator assembly of thisinvention;

FIG. 10 is a cross-sectional view taken substantially along the linel0-10 of FIG. 9 illustrating the locator assembly of FIG. 9 suspendedacross a roadway gap; and

FIG. 11 is a perspective view of yet another locator assembly of thisinvention.

. Referring first to FIGS. 1 and 4-7, a locator assembly 10 of thisinvention comprises an elongate fixed rail member 12 and a secondadjustable rail member 14. Rail members 12 and 14 may each be formed ofplywood, such as hard plywood, suitably sealed and painted to resistdelamination and wear. Fixed rail 12 provides at least twolongitudinally spaced first anchor locators, which in the embodiment ofFIG. 1 comprises three spaced anchor or hole locators or drill bushings16. Drill bushings 16 are made of hard tool steel which resist wear whenholes are drilled in underlying slabs. Drill bushings 16 are press fitin suitable bores in the rail 12.

Laterally adjustable rail 14 similarly mounts anchor locators, such asdrill bushings 18. Like drill bushings l6, drill bushings 18 arelongitudinally spaced from each other to coincide with the spacing ofanchoring studs to be in the slabs for a gap bridging and sealingdevice, such as an end dam section 50. Each pair of drill bushings 16,18 is laterally spaced along a line generally normal to the longitudinallines along which the several bushings 16 and 18 lie. It is the lateralspacing of the pairs of locator bushings 16, 18 which the laterallyadjustble rail assembly is intended to vary in accordance with ambienttemperature conditions on the day of installation.

Adjustable rail member 14 is releasably secured to the fixed rail member12 in selected positions of lateral adjustment, as by spacer means orbars 20 and suitable securing means. Spacer bars 20 are fixedly securedas by bolts 22 and suitable nuts (not shown) to fixed rail member 12.Bolts 24 and complementary opening defining means, such asjam nuts 26,secure bars 20 to adjustable rail member 14. Each spacer bar 20 providestemperature gauging means to identify a plurality of different ambienttemperature conditions, thereby to identify a plurality of differentpositions of lateral adjustment for rail member 14 relative to railmember 12, and thereby to provide for selective spacing between theanchor locators 16 and 18 to correspond to different ambient temperatureconditions.

As seen in FIG. 4, in the embodiment illustrated, there are fiveidentifiable temperature conditions represented by apertures 28 providedin each spacer bar 20. The temperatures which may be selected range intwenty-degree increments from 20F to 100F. For convenience, thetemperature gauging apertures 28 are located in two longitudinallyspaced rows, the apertures of each row being alignable, respectively,with one of the two jam nuts 26.

When an ambient temperature corresponding to one of those provided byapertures 28 is to be selected, bolts 24 are removed and are theninserted through the appropriate temperature apertures in each spacerbar, such as the forty degree apertures illustrated in FIG. 4, and arethen threaded into the underlying jam nuts 26 releasably to secure thelaterally adjustable rail 14 and the fixed rail 12 against relativelateral movement. In that position, the drill bushings 16, 18 arelocated at a predetermined spacing from each other both longitudinallyand laterally of the locator assembly 10, and are ready for the drillingof holes for the anchoring studs in the concrete adjacent a gap G inpositions coinciding with the design location of the anchor stud holesin the end dam sections to be used at the gap.

As seen in FIG. 5, rails 12 and 14 are slightly undercut at 30 at thespacer bars 20 to resist relative movement of the rails longitudinallyof each other.

A typical end dam assembly for which the locator assembly of thisinvention is intended properly to locate the relative positions foranchoring studs or the like comprises a plurality of longitudinallydisposed, elongate end dam sections 50. Each section 50 comprises a pairof spaced, longitudinally extending parallel side pads 52 joinedcentrally by a gap bridging, longitudinally extending joint membrane 54which may be fabric reinforced. Membrane 54 is substantially thinnerthan side pads 52 and is secured to the side pads adjacent the loweredges of the side pads. Side pads 52 not only secure the sections 50 toslabs S, but also act as an armor for the road surface edges, preventingcrumbling, spalling, and the like. Each end dam section 50 is preferablyintegrally formed, as by being extruded or molded of a suitableelastomeric material, such as rubber or a polychloroprene or neoprenerubber.

Each side pad 52 is generally rectangular in transverse cross sectionand may embed a longitudinally extending reinforcing plate (not shown).The reinforcing plates extend substantially the entire length of sidepads 52, are parallel to the upper surfaces of the slabs and serve todistribute the anchoring stud load between anchoring studs. Each sidepad defines a plurality of properly located bolt holes 58, such asthree, which are proportioned to accommodate and receive a threadedanchoring stud 60. Washers and suitable nut means secured to the studsserve to secure the side pads 52 to the edges of the deck slabs Sadjacent gap G. The studs 60 are suitably secured in deck slab S, as byan epoxy-cement grout in a known manner after holes for them have beenbored, following locating of their proper positions by a locatorassembly of this inventron.

The upper surfaces of the side pads 52 actually serve as roadway or decksurfaces and as such they are ultimately level with the upper surface ofslabs S. Because the upper surfaces form part of the roadway surface, toprovide for maximum traction, the upper surfaces may be suitablypatterned or grooved.

Desirably the end dam sections 50 are adhered to the slabs S by asuitable adhesive which is applied intermediate the lower surfaces ofthe pads 52 and the confronting slab surfaces. When so secured andpositioned, side pads 52 not only seal against the passage of waterunder the pads and downwardly through the gap G, but also protect theedges of the slabs adjacent gap G from breakage and crumbling.

Because gaps to be sealed are frequently one hundred or more feet inlength, it is neither feasible nor desirable to provide end dam sections50 which are commensurate in length with such slabs. Accordingly, a gapG may be bridged and sealed by a plurality of end dam sections 10disposed in an end-to-end array, and each end dam section may be formedto be sealingly secured to the adjacent last preceding one.

To that end, one end of side pad 52 has first tapered end faces and theother end has a second tapered end face 72, the tapers of which aregenerally complementary. Adjacent the end providing end faces 70, jointmembrane 54 projects outwardly and integrally with additionallongitudinal seal segments 74. The lower surfaces of side pads 52 at theend providing end faces 72 define notches 76 to receive the sealsegments 74. When adjacent section ends are juxtaposed portions of jointmembranes 14 of adjoining end dam sections will overlie each other, andseal segments 74 will underlie and fit within notches 76. When asuitable adhesive is interposed between confronting end faces 70 and 72,between overlapping areas of adjacent joint membranes 54, and betweenseal segments 74 and notches 76, a secure, watertight, and substantiallypermanent joint will be formed between adjoining end darn sections 50.As such, a suitable number of end dam sections 50 may be joined togetherto form a sealed, gap bridging longitudinal end dam assemblycommensurate in length with any usual length or width of deck slabs.

The side pads 52 and membrane 54 are so configured and arranged that inall positions of movement of the slabs, hence of the membrane, themembrane 54 is untensioned, thereby transmitting substantially noreaction load to the studs or adhesive, and exerting no load on the sidepads or on the slabs. That desired end is assured when the anchoringstud holes are laterally located according to the ambient temperature atthe time of installation. The proper lateral and longitudinal spacingsof the anchoring studs 60 is most effectively obtained by using alocator assembly of this invention.

Not only that, but the proper lateral location of the studs assures theproper functioning of end dam sections incorporating a flexible membraneof the type of membrane 54 which is designed to discharge dirt anddebris from the assembly, thereby minimizing possible damage to the enddam assembly and impairment of its sealing function.

A first set of anchoring stud holes for an end dam section may beprovided by positioning a properly adjusted locator assembly on slabsurfaces adjacent a gap, and thereafter drilling holes in slabs Sthrough bushings 16 and 18 with a suitable drill and drill bit sized topass through bushings 16, 18. The locator assembly is then removed andthe guide pins 32 which are provided at the end of each of the rails 12a 14 are positioned in the two end anchoring stud holes to locate thenext se ries of holes. Guide pins 32 are press fit into the rails (seeFIG. 6) and project below the rails 12 and 14 a distance sufficient toenter laterally spaced, previously drilled end anchor holes, therebyproperly to locate the hole locators or drill bushings 16 of locatorassembly 10 longitudinally of the roadway gap for the next set of anchorholes to be drilled through bushings 16 and 18.

FIG. 8 illustrates a locator assembly 10 of this invention positionedfor the drilling of anchoring stud holes. At the left of FIG. 8, two enddam sections 50 have already been installed. Between the locatorassembly 10 and the previously installed end dam sections, two pairs oflaterally spaced anchoring studs 60 are shown in position. Twopreviously drilled anchoring stud holes have received a pair of theguide pins 32 thereby to position the drill bushings 16 and 18 properlyfor drilling of the next series of anchoring stud holes. When thoseholes are drilled, the locator assembly will be removed, the remainingtwo anchoring studs will be secured in the holes in which guide pins 32were located, and another end dam section will be mounted in securedendto-end relation to those already installed.

Guide pins 32 may desirably be removable so that one may be removed toallow for slight angling of a locator assembly with respect to apreviously located set of anchoring holes. Because the rail members 12and 14 are fixed against relative lateral and longitudinal movement, oneguide pin 32 is sufficient properly to locate the positions for newanchoring holes.

It will also be noted that support members 34 (FIG. 7) are provided. Theheads of members 34 extend a distance h above the upper surfaces ofrails 12 and 14, a distance equal to the vertical extension of guidepins 32 and bolts 22 and 24. The purpose of this is to minimize I thebreakage of the rails when they are out of use and are resting on theirupper surfaces if the ends where the support members 1% are located arestepped on accidentally.

A further embodiment of this invention is illustrated in FIGS. 9 and111. As is seen in FIG. 10, portions of the slabs adjacent a roadway gapG are broken away. In the case illustrated, a sliding metal plate gapbridging assembly had previously been installed at the gap. It failed,and the sliding plates, together with some of the concrete and portionsof the anchors, had been removed. Because of that, the slab surfacesimmediately adjacent the gap are not suitable for directly supporting alocator assembly.

In such an environment a further locator assembly of this invention isuseful. Locator assembly 100 may be substantially identical to locatorassembly 10, except that it is provided with an outrigger assemblycomprising a plurality of outrigger members 102 which are sufficientlylong to reach to sound portions P (FIG. 10) of the slabs, thereby tosuspend the locator assembly 100 over the gap and the immediatelyadjacent edges of the slabs.

The locator assembly 100 comprises a fixed elongate rail member 112 andan adjustable rail member 114. Rail members 112 and 114 provide drillbushings 116, 118 positioned to coincide with the bolt holes of an enddam section to be secured to the slabs. The adjustable rail member isreleasably securable to the fixed rail member by spacer bars 120 whichare secured by jam nuts and bolts to the adjustable rail member in themanner described in connection with the embodiment of FIGS. 1-8.

As best seen in FIG. 11), the elevation at which the bases of the railmembers 112 and 114 is located is determined by the vertical dimensionof the gap bridging means to be used. The desired elevation is adjustedfor by shim members 140. Shims 141) are preferably secured to the uppersurfaces of rail members 112 and 114 and serve to secure the outriggers102 at their upper edges. The shims and outriggers may be of wood andmay be nailed to each other.

In use, a locator assembly 100 is suspended, for example as illustratedin FIG. 10, and bolt holes H are drilled through the drill bushings 116,118, downwardly into the sound concrete of the slabs S. Thereafter,anchoring studs 60 are suspended from the drill bushings 116, 118 sothat the upper end of each stud is located at the proper elevation withrespect to the upper roadway surface of the slabs S, i.e., somewhatbelow the upper surface so that it will be recessed within an end damsection 50. That elevation is maintained by threading a nut 128 on eachanchoring stud 60 and suspending the stud by the nut from a washer 130positioned over the associated drill bushing. Thereafter, anchoringgrout C, such as an epoxy cement, is introduced into the holes H and thestuds become securely anchored and fixed in position. Concrete isthereafter provided to finish the slab edges and to ready them withhorizontal surfaces to receive the end dam sections. This may beaccomplished by positioning a piece of up wardly extending foam or woodforms in the gap to provide lateral support for the body of concrete150.

Because the slabs with edges such as those illustrated by FIG. are notadapted readily to receive guide pins, such as pins 32, in previouslybored holes, it is necessary otherwise to locate the drill bushings 116,118 of successive locator assemblies 100. To that end, a longitudinalspacer member 160 is provided. Spacer member 160 mounts a pair ofdepending pins 162 to be received within complementary bores 164 in thetwo end spacer bars 120. After a first locator assembly 100 has beenpositioned for use, subsequent locator assemblies 100 may be positionedrelative to the first by inserting the pins 162 in bores 164. In thisway, the drill bushings of the second and subsequent locator assembliesare properly positioned with respect to those of the first, therebyproperly to locate the anchoring holes for a series of end dam sectionsto be installed at a gap in an end-to-end array.

Although a locator assembly 100 in accordance with FIGS. 9 and 10 is apreferred embodiment for use in environments such as that illustrated byFIG. 10, it is also possible to utilize a further locator assembly 200for use for repair installations of the character illustrated by FIG.10. In such cases a locator assembly 200 may comprise a rail assembly202 which is provided with shims 204 and outriggers 206. Locatorassembly 200 may be similarly supported from sound portions P of roadwayslabs, as illustrated by FIG. 10. Rail assembly 202 may defineappropriate drill bores 210 laterally spaced in accordance with thetemperature conditions on the day of installation and longitudinallyspaced to coincide with the bolt hole positions for a particular end damsection. Anchoring studs may be supported, as by nuts 128 at bores 210to be cemented in place, as described in connection with the locatorassembly 100.

Where the edges of the slabs have been so far broken down that there iseither an insufficient thickness of sound concrete or an inordinatelylong stud would have to be used, a stud may be secured, as by two nuts128, one on each side of the rail, to the locator assembly to be heldwhile a suitable grout is positioned around the stud to secure it to theslab. The single rail assembly 202, with the longitudinally continuousshims 204, may also serve as an improved form for shaping and conformingthe concrete to be added to finish the edges of the slabs adjacent thegap, thereby to ready them to support a gap bridging end dam assembly.Indeed wooden form members may be nailed to the bottom of rail assembly202 to fit into the gap and to provide lateral support for the repaircement. Successive assemblies 200 may be longitudinally oriented, as bya spacer bar assembly 160.

Although a particular laterally adjustable locator assembly has beendescribed, others which function similarly but which are differentlyconstructed may be utilized. For example, a fixed rail member may beprovided which, in plan view, mounts an overlying second adjustable railmember or rail member segments which are laterally movable on the fixedrail member. Appropriate apertures in the first rail member are providedso that the anchor locators such as drill bushings of the movable railmember or segments will confront the slab edges where the stud holes areto be drilled or from which studs may be suspended.

Further, a plurality of temperature identifying means may be positionedin the adjustable rail (such as by a plurality of jam nuts) and thespacer bars may provide only a single aperture through which a boltpasses into the jam nut selected in accordance with the ambienttemperature. Alternatively, clamps for securing the rails together in agreat multiplicity of different laterally spaced relationships may beutilized.

These and other modifications within the scope and purview of thisinvention will become apparent from the preceding description anddrawings. Accordingly, we intend the scope of this invention to belimited only in accordance with the claims.

We claim:

1. A method of locating the lateral and longitudinal positions foranchoring studs used to secure roadway gap sealing and bridging devicesto adjacent roadway slabs over an elongate roadway gap, comprising thesteps of providing an elongate locator assembly having a plurality ofpairs of laterally spaced anchoring stud locators, each of said pairsbeing longitudinally spaced from each other pair, adjusting the lateralspacing of each of said pairs of anchoring stud locators in response toambient temperature conditions, supporting said locator assembly on saidslabs to straddle said gap with one of each of said pairs of locatorsoverlying one of said slabs and the other of each of said pairs oflocators overlying the other of said slabs, positioning an anchoringstud at a plurality of pairs of locations corresponding to each of aplurality of pairs of said anchoring stud locators, and securing saidstuds to said slabs at said locations.

2. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 1 wherein the locator assemblyis suspended over said gap from portions of said slabs spaced from saidgap, and wherein the step of positioning anchoring studs comprisessuspending a stud at each of a plurality of pairs of anchoring studlocators, and then securing said studs to said slabs.

3. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 1 comprising the further stepof supporting a plurality of like locator assemblies in end-to-endrelation on said slabs.

4. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 1 wherein a plurality of pairsof stud locators are drill bushings and comprising the step of drillinganchoring stud holes in said slabs through each of said drill bushingsprior to positioning said anchoring studs.

5. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 4 comprising positioning studlocators comprising guide pin means mounted on said locator assembly inpreviously drilled stud holes longitudinally to position a plurality ofpairs of locators in predetermined relation to previously drilled studholes.

6. A method of locating the lateral and longitudinal positions foranchoring studs used to secure roadway gap sealing and bridging devicesto adjacent roadway slabs over an elongate roadway gap, comprising thesteps of providing an elongate locator assembly having a plurality ofstud locators, said stud locators being arranged in pairs, a firstlocator of each pair being laterally spaced from the second locator ofeach pair, said pairs being longitudinally spaced from each other pair,supporting said locator assembly on said slabs in a first locatorassembly position with said first locators overlying one slab and saidsecond locators overlying the other slab to straddle the gap, saidlocators being positioned to define first stud positions, supportingsaid locator assembly in a second longitudinally spaced position on saidslabs in a second locator assembly position with said first and secondlocators overlying said first and second slabs to straddle the gap, withpairs of said first and second locators being positioned to definesecond stud positions, a pair of said first and second locators in saidsecond position being positioned to overlie a pair of previously locatedfirst stud positions thereby longitudinally to position said assemblyand pairs of first and second locators in predetermined longitudinalrelation to first stud positions, positioning anchoring studs at each ofsaid stud positions and securing said studs to the slabs at each studposition, whereby all of said stud positions are in predetermined andproper lateral and longitudinal relation, each to the other.

7. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 6 wherein the locator assemblyis suspended over said gap from portions of said slabs spaced from saidgap, and wherein the step of positioning anchoring studs comprisessuspending studs from said locator assembly at said stud positions, andthen securing said studs to said slabs.

8. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 6 comprising the further stepof adjusting the lateral spacing of said first and second locators inresponse to ambient temperature conditions prior to supporting saidlocator assembly on said slabs.

9. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 6 wherein a plurality of pairsof locators are drill bushings, and comprising the step of drillinganchoring stud holes in said slabs through each of said drill bushingsprior to positioning anchoring studs at said stud positions.

10. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 9 in whcih said locatorassembly includes a pair of locators comprising positioning guide pinmeans mounted on said locator assembly and wherein said one of saidfirst stud positions comprises a pair of laterally spaced previouslydrilled stud holes, and said guide pin means are positioned in saidholes longitudinally to position the remaining locators in predeterminedrelation to previously drilled stud holes.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No3,843,273 Dated October 22, 1974 Inventor) Daniel E. Czernik andClarence H. Neff It is certified that error appears in theabove-identified patent and that said Letters Patent are herebycorrected as shown below:

Column 2, line 68, before "plywood" insert maple Column 5, line 34, "a"should be and Column 10, line 17 (Claim 10), "whcih" should be whichSigned and sealed this 14th day of January 1975.

(SEAL) Attest:

v McCOY Mo GIBSON JR. C. MARSHALL DANN Attesting Officer Commissioner ofPatents ORM -105O 10 69 T Po USCOMM'DC 60376-P69 I u s covnuuun "mumsOFFIC! I!" 0-366-1n

1. A method of locating the lateral and longitudinal positions foranchoring studs used to secure roadway gap sealing and bridging devicesto adjacent roadway slabs over an elongate roadway gap, comprising thesteps of providing an elongate locator assembly having a plurality ofpairs of laterally spaced anchoring stud locators, each of said pairsbeing longitudinally spaced from each other pair, adjusting the lateralspacing of each of said pairs of anchoring stud locators in response toambient temperature conditions, supporting said locator assembly on saidslabs to straddle said gap with one of each of said pairs of locatorsoverlying one of said slabs and the other of each of said pairs oflocators overlying the other of said slabs, positioning an anchoringstud at a plurality of pairs of locations corresponding to each of aplurality of pairs of said anchoring stud locators, and securing saidstuds to said slabs at said locations.
 2. A method of locating thelateral and longitudinal positions for anchoring studs in accordancewith claim 1 wherein the locator assembly is suspended over said gapfrom portions of said slabs spaced from said gap, and wherein the stepof positioning anchoring studs comprises suspending a stud at each of aplurality of pairs of anchoring stud locators, and then securing saidstuds to said slabs.
 3. A method of locating the lateral andlongitudinal positions for anchoring studs in accordance with claim 1comprising the further step of supporting a plurality of like locatorassemblies in end-to-end relation on said slabs.
 4. A method of locatingthe lateral and longitudinal positions for anchoring studs in accordancewith claim 1 wherein a plurality of pairs of stud locators are drillbushings and comprising the step of drilling anchoring stud holes insaid slabs through each of said drill bushings prior to positioning saidanchoring studs.
 5. A method of locating the lateral and longitudinalpositions for anchoring studs in accordance with claim 4 comprisingpositioning stud locators comprising guide pin means mounted on saidlocator assembly in previously drilled stud holes longitudinallY toposition a plurality of pairs of locators in predetermined relation topreviously drilled stud holes.
 6. A method of locating the lateral andlongitudinal positions for anchoring studs used to secure roadway gapsealing and bridging devices to adjacent roadway slabs over an elongateroadway gap, comprising the steps of providing an elongate locatorassembly having a plurality of stud locators, said stud locators beingarranged in pairs, a first locator of each pair being laterally spacedfrom the second locator of each pair, said pairs being longitudinallyspaced from each other pair, supporting said locator assembly on saidslabs in a first locator assembly position with said first locatorsoverlying one slab and said second locators overlying the other slab tostraddle the gap, said locators being positioned to define first studpositions, supporting said locator assembly in a second longitudinallyspaced position on said slabs in a second locator assembly position withsaid first and second locators overlying said first and second slabs tostraddle the gap, with pairs of said first and second locators beingpositioned to define second stud positions, a pair of said first andsecond locators in said second position being positioned to overlie apair of previously located first stud positions thereby longitudinallyto position said assembly and pairs of first and second locators inpredetermined longitudinal relation to first stud positions, positioninganchoring studs at each of said stud positions and securing said studsto the slabs at each stud position, whereby all of said stud positionsare in predetermined and proper lateral and longitudinal relation, eachto the other.
 7. A method of locating the lateral and longitudinalpositions for anchoring studs in accordance with claim 6 wherein thelocator assembly is suspended over said gap from portions of said slabsspaced from said gap, and wherein the step of positioning anchoringstuds comprises suspending studs from said locator assembly at said studpositions, and then securing said studs to said slabs.
 8. A method oflocating the lateral and longitudinal positions for anchoring studs inaccordance with claim 6 comprising the further step of adjusting thelateral spacing of said first and second locators in response to ambienttemperature conditions prior to supporting said locator assembly on saidslabs.
 9. A method of locating the lateral and longitudinal positionsfor anchoring studs in accordance with claim 6 wherein a plurality ofpairs of locators are drill bushings, and comprising the step ofdrilling anchoring stud holes in said slabs through each of said drillbushings prior to positioning anchoring studs at said stud positions.10. A method of locating the lateral and longitudinal positions foranchoring studs in accordance with claim 9 in whcih said locatorassembly includes a pair of locators comprising positioning guide pinmeans mounted on said locator assembly and wherein said one of saidfirst stud positions comprises a pair of laterally spaced previouslydrilled stud holes, and said guide pin means are positioned in saidholes longitudinally to position the remaining locators in predeterminedrelation to previously drilled stud holes.